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Microchip Technology 24LC01BT-E/SN
- Part No.:
- 24LC01BT-E/SN
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
24LC01BT-E/SN.pdf
- Description:
- IC EEPROM 1KBIT I2C 400KHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:18,831
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Product details
Overview
24LC01BT-E/SN from Microchip Technology Inc. is a 1 Kbit I²C-compatible serial EEPROM organized as 128 × 8-bit memory with hardware write-protection, 8-byte page write buffer, and operation down to 2.5V. It supports 400 kHz clock frequency, delivers ≤1 mA active current and ≤5 µA extended-temperature standby current, and targets nonvolatile data storage in space-constrained industrial control modules.
For engineers reviewing the 24LC01BT-E/SN datasheet, 24LC01BT-E/SN pinout, 24LC01BT-E/SN application, or 24LC01BT-E/SN equivalent, key selection criteria include VCC range (2.5–5.5V), E-temp rating (−40°C to +125°C), SOIC-8 packaging, I²C bus timing compliance, and hardware WP pin functionality for secure configuration storage.
Technical Context
The 24LC01BT-E/SN implements a 2-wire I²C interface with Schmitt-trigger inputs and slope-controlled outputs to suppress noise and eliminate ground bounce. Its internal address pointer enables current-address, random, and sequential read modes without external addressing logic.
Write operations support byte and page modes (up to 8 bytes per page), with self-timed erase/write cycles completing in ≤5 ms. The device uses an on-chip HV generator for EEPROM programming and includes acknowledge polling to determine write completion without fixed delays.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1 Kbit (128 × 8-bit) - fits small configuration tables, calibration data, or device IDs in resource-limited systems. |
| VCC Range | 2.5V to 5.5V - compatible with 3.3V and 5V logic domains; excludes sub-2.5V operation unlike 24AA01/24FC01 variants. |
| Max Clock Frequency | 400 kHz - supports standard-mode I²C; not rated for fast-mode (1 MHz) or low-voltage (<2.5V) 100 kHz operation. |
| Temp Range | −40°C to +125°C (Extended) - qualified for under-hood automotive, industrial motor drives, and high-ambient environments. |
| Write Endurance | 1,000,000 cycles - ensures long-term reliability in firmware update logging or parameter tuning applications. |
| Data Retention | 200 years - guarantees persistent storage of critical settings across product lifetime without refresh. |
| Standby Current | 5 µA max at E-temp - minimizes quiescent power in always-on battery-backed or energy-harvesting nodes. |
Pinout & Package
24LC01BT-E/SN is supplied in an 8-lead SOIC (Small Outline Integrated Circuit) package with 150 mil body width, JEDEC MS-012AC compliant footprint, and matte tin (Sn) lead finish. Pin 1 is marked by a beveled corner or laser dot.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Address Input | No internal connection; may be left floating or tied to VSS/VCC - no effect on device addressing (fixed 1010xxx client address). |
| A1 | Address Input | No internal connection; same floating/tie behavior as A0 - eliminates need for external pull-up/down resistors. |
| A2 | Address Input | No internal connection; identical to A0/A1 - simplifies PCB layout with unused pins. |
| VSS | Ground | Reference return for all signals and internal circuitry; must connect to system GND plane for stable operation. |
| SDA | Serial Data I/O | Open-drain bidirectional bus line requiring external pull-up resistor (2 kΩ typical for 400 kHz); transmits addresses, data, and ACK/NACK. |
| SCL | Serial Clock Input | Input-only clock line driven by host controller; synchronizes all data transfers and defines timing windows per I²C spec. |
| WP | Write-Protect Input | Logic-high (VCC) disables all writes to entire memory array (00h–7Fh); logic-low (VSS) enables full read/write access. |
| VCC | Power Supply | Primary supply input (2.5–5.5V); powers EEPROM core, interface logic, and internal charge pump for write operations. |
Key Features
| Feature | Design Value |
|---|---|
| Hardware Write-Protection | Single-pin (WP) global lock prevents accidental overwrites during power transitions or firmware faults - no software overhead required. |
| 8-Byte Page Write Buffer | Reduces I²C transaction count for multi-byte updates; enables atomic writes of up to 8 bytes without intermediate stop conditions. |
| Schmitt Trigger Inputs | 5% hysteresis (0.05×VCC) on SDA/SCL rejects noise spikes >50 ns - improves robustness on long or noisy PCB traces. |
| Self-Timed Write Cycle | Internal timing eliminates need for host wait states; maximum 5 ms duration allows predictable worst-case latency. |
| ESD Protection | ≥4 kV HBM - withstands handling and board-level ESD events without latch-up or parametric shift. |
Applications
| Industrial Sensor Node | Automotive Body Control Module |
|---|---|
|
Use Scenario: Storing calibrated sensor offsets and linearization coefficients in a temperature/humidity sensor node operating continuously at 85°C ambient. IC Role / Device Role / Timing Role: Nonvolatile configuration storage with guaranteed 200-year retention and 1M endurance under thermal stress. Use Value: Eliminates factory recalibration after power loss and supports field updates without external backup power or supercapacitors. |
Use Scenario: Holding door lock actuator position limits and user preference settings in a BCM exposed to under-dash temperatures up to 125°C. IC Role / Device Role / Timing Role: Extended-temperature EEPROM providing secure, WP-protected storage for safety-critical configuration data. Use Value: Prevents unauthorized or erroneous writes via hardware WP pin, ensuring functional safety compliance without software intervention. |
| Medical Infusion Pump | Smart Energy Meter |
|
Use Scenario: Recording dose history, error logs, and maintenance counters in a Class II medical device requiring traceable, tamper-resistant data storage. IC Role / Device Role / Timing Role: Low-power (5 µA standby) I²C EEPROM supporting audit trail persistence across battery swaps and AC outages. Use Value: Meets IEC 62304 data integrity requirements via hardware write protection and 1M-cycle endurance for daily log entries. |
Use Scenario: Storing tariff schedules, meter calibration constants, and firmware version stamps in a DIN-rail mounted electricity meter certified to IEC 62056. IC Role / Device Role / Timing Role: Industrial-grade serial EEPROM interfacing directly with MCU's I²C peripheral at 400 kHz for deterministic read/write latency. Use Value: Enables remote firmware updates with verified configuration rollback using page-write atomicity and ACK polling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 24AA01T-I/SN | Wider VCC range (1.7–5.5V); lower 1 µA standby current; only rated for I-temp (−40°C to +85°C). | Suitable for battery-powered portable devices but not extended-temperature automotive or industrial use. | Select when sub-2.5V operation or ultra-low standby current is required, and ambient temperature stays ≤85°C. |
| 24FC01T-E/SN | Supports 1 MHz I²C clock; same 1.7–5.5V VCC range; 3 µA E-temp standby current. | Enables higher throughput in bandwidth-constrained systems but requires stricter bus timing design. | Choose when faster write/read cycles are needed and host controller supports fast-mode I²C timing margins. |
Compared with 24LC01BT-E/SN, the 24AA01T-I/SN trades extended temperature capability for lower voltage operation and reduced standby current, while the 24FC01T-E/SN prioritizes speed over voltage flexibility - making the 24LC01BT-E/SN optimal for cost-sensitive, thermally demanding 400 kHz I²C designs.
Availability
24LC01BT-E/SN is available at Aetrix Electronics and suitable for industrial sensor nodes, automotive body control modules, medical infusion pumps, and smart energy meters requiring stable component supply with guaranteed long-term availability.
Supply support for 24LC01BT-E/SN includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Microchip Technology Inc. is a leading provider of microcontrollers, analog components, and memory solutions, headquartered in Chandler, Arizona, with global manufacturing and support infrastructure.
The 24LC01B family was designed specifically for reliable, low-power nonvolatile data storage in harsh industrial and automotive environments where extended temperature operation and hardware write protection are mandatory.
FAQ
What is the maximum I²C clock frequency supported by the 24LC01BT-E/SN?
The 24LC01BT-E/SN supports a maximum clock frequency of 400 kHz under standard-mode I²C operation at VCC = 2.5V to 5.5V. It is not rated for fast-mode (1 MHz) operation like the 24FC01 variant, and does not support 100 kHz at voltages below 2.5V - confirming its role in mid-speed, thermally robust applications.
Does the 24LC01BT-E/SN require external pull-up resistors on SDA and SCL lines?
Yes, the 24LC01BT-E/SN requires external pull-up resistors on both SDA and SCL lines because its I²C interface uses open-drain outputs. A 2 kΩ resistor is recommended for 400 kHz operation; values must be adjusted based on bus capacitance and rise-time requirements per I²C specification.
How does the WP pin function on the 24LC01BT-E/SN?
When the WP pin of the 24LC01BT-E/SN is tied to VCC, all write operations to the entire memory array (addresses 00h–7Fh) are inhibited while read operations remain fully functional. When tied to VSS, full read/write access is enabled - providing simple, hardware-level protection against unintended firmware or configuration corruption.
What is the memory organization of the 24LC01BT-E/SN?
The 24LC01BT-E/SN contains 1 Kbit of EEPROM organized as 128 words × 8 bits (128 × 8). It uses a single block architecture with no internal sub-banks, and supports page writes of up to 8 bytes aligned to physical page boundaries starting at addresses 00h, 08h, 10h, etc.
Is the 24LC01BT-E/SN AEC-Q100 qualified?
Yes, the 24LC01BT-E/SN is AEC-Q100 qualified for automotive applications. Its Extended temperature grade (−40°C to +125°C), 1 million write cycles, 200-year data retention, and ≥4 kV ESD protection meet the reliability requirements defined in AEC-Q100 Rev H for Grade 1 and Grade 0 components.
24LC01BT-E/SN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 1Kbit
- Memory Organization:
- 128 x 8
- Memory Interface:
- I2C
- Clock Frequency:
- 400 kHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- 3.5 µs
- Voltage - Supply:
- 2.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
24LC01BT-E/SN FAQ
1.How can I place an order for 24LC01BT-E/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for 24LC01BT-E/SN on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for 24LC01BT-E/SN reliable?
The price and inventory of 24LC01BT-E/SN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24LC01BT-E/SN is usually 5 days.
3.What payment methods are accepted for 24LC01BT-E/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24LC01BT-E/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24LC01BT-E/SN?
24LC01BT-E/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24LC01BT-E/SN order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for 24LC01BT-E/SN?
For technical support, including 24LC01BT-E/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24LC01BT-E/SN requirements.
6.How does Aetrix verify that 24LC01BT-E/SN is sourced from the original manufacturer or authorized distributors?
All 24LC01BT-E/SN products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 24LC01BT-E/SN meets industry standards.
7.What is the process for return or replacement of 24LC01BT-E/SN?
All 24LC01BT-E/SN units undergo pre-shipment inspection (PSI). If there is an issue with 24LC01BT-E/SN, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The 24LC01BT-E/SN part is unused and in its original packaging.
Return procedure for 24LC01BT-E/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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